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        Module&nbsp;fallback
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<h1 class="epydoc">Source Code for <a href="netaddr.fallback-module.html" onclick="show_private();">Module netaddr.fallback</a></h1>
<pre class="py-src">
<a name="L1"></a><tt class="py-lineno">  1</tt>  <tt class="py-line"><tt class="py-comment">#!/usr/bin/env python</tt> </tt>
<a name="L2"></a><tt class="py-lineno">  2</tt>  <tt class="py-line"><tt class="py-comment"></tt><tt class="py-comment">#-----------------------------------------------------------------------------</tt> </tt>
<a name="L3"></a><tt class="py-lineno">  3</tt>  <tt class="py-line"><tt class="py-comment"></tt><tt class="py-comment">#   Copyright (c) 2008-2009, David P. D. Moss. All rights reserved.</tt> </tt>
<a name="L4"></a><tt class="py-lineno">  4</tt>  <tt class="py-line"><tt class="py-comment"></tt><tt class="py-comment">#</tt> </tt>
<a name="L5"></a><tt class="py-lineno">  5</tt>  <tt class="py-line"><tt class="py-comment"></tt><tt class="py-comment">#   Released under the BSD license. See the LICENSE file for details.</tt> </tt>
<a name="L6"></a><tt class="py-lineno">  6</tt>  <tt class="py-line"><tt class="py-comment"></tt><tt class="py-comment">#-----------------------------------------------------------------------------</tt> </tt>
<a name="L7"></a><tt class="py-lineno">  7</tt>  <tt class="py-line"><tt class="py-comment"></tt><tt class="py-docstring">"""</tt> </tt>
<a name="L8"></a><tt class="py-lineno">  8</tt>  <tt class="py-line"><tt class="py-docstring">A module containing pure-Python implementations of certain socket module</tt> </tt>
<a name="L9"></a><tt class="py-lineno">  9</tt>  <tt class="py-line"><tt class="py-docstring">constants and functions. Useful on some platforms or Python interpreters where</tt> </tt>
<a name="L10"></a><tt class="py-lineno"> 10</tt>  <tt class="py-line"><tt class="py-docstring">they may be missing for various reasons.</tt> </tt>
<a name="L11"></a><tt class="py-lineno"> 11</tt>  <tt class="py-line"><tt class="py-docstring">"""</tt> </tt>
<a name="L12"></a><tt class="py-lineno"> 12</tt>  <tt class="py-line"><tt class="py-keyword">from</tt> <tt class="py-name">struct</tt> <tt class="py-keyword">import</tt> <tt class="py-name">unpack</tt> <tt class="py-keyword">as</tt> <tt class="py-name">_unpack</tt><tt class="py-op">,</tt> <tt class="py-name">pack</tt> <tt class="py-keyword">as</tt> <tt class="py-name">_pack</tt> </tt>
<a name="L13"></a><tt class="py-lineno"> 13</tt>  <tt class="py-line"> </tt>
<a name="L14"></a><tt class="py-lineno"> 14</tt>  <tt class="py-line"><tt id="link-0" class="py-name" targets="Variable netaddr.fallback.AF_UNSPEC=netaddr.fallback-module.html#AF_UNSPEC"><a title="netaddr.fallback.AF_UNSPEC" class="py-name" href="#" onclick="return doclink('link-0', 'AF_UNSPEC', 'link-0');">AF_UNSPEC</a></tt> <tt class="py-op">=</tt> <tt class="py-number">0</tt> </tt>
<a name="L15"></a><tt class="py-lineno"> 15</tt>  <tt class="py-line"><tt id="link-1" class="py-name" targets="Variable netaddr.fallback.AF_INET=netaddr.fallback-module.html#AF_INET"><a title="netaddr.fallback.AF_INET" class="py-name" href="#" onclick="return doclink('link-1', 'AF_INET', 'link-1');">AF_INET</a></tt> <tt class="py-op">=</tt> <tt class="py-number">2</tt> </tt>
<a name="L16"></a><tt class="py-lineno"> 16</tt>  <tt class="py-line"><tt id="link-2" class="py-name" targets="Variable netaddr.fallback.AF_INET6=netaddr.fallback-module.html#AF_INET6"><a title="netaddr.fallback.AF_INET6" class="py-name" href="#" onclick="return doclink('link-2', 'AF_INET6', 'link-2');">AF_INET6</a></tt> <tt class="py-op">=</tt> <tt class="py-number">10</tt> </tt>
<a name="L17"></a><tt class="py-lineno"> 17</tt>  <tt class="py-line"> </tt>
<a name="L18"></a><tt class="py-lineno"> 18</tt>  <tt class="py-line"><tt class="py-comment">#-----------------------------------------------------------------------------</tt> </tt>
<a name="inet_ntoa"></a><div id="inet_ntoa-def"><a name="L19"></a><tt class="py-lineno"> 19</tt> <a class="py-toggle" href="#" id="inet_ntoa-toggle" onclick="return toggle('inet_ntoa');">-</a><tt class="py-line"><tt class="py-comment"></tt><tt class="py-keyword">def</tt> <a class="py-def-name" href="netaddr.fallback-module.html#inet_ntoa">inet_ntoa</a><tt class="py-op">(</tt><tt class="py-param">packed_ip</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="inet_ntoa-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="inet_ntoa-expanded"><a name="L20"></a><tt class="py-lineno"> 20</tt>  <tt class="py-line">    <tt class="py-docstring">"""</tt> </tt>
<a name="L21"></a><tt class="py-lineno"> 21</tt>  <tt class="py-line"><tt class="py-docstring">    Convert an IP address from 32-bit packed binary format to string format.</tt> </tt>
<a name="L22"></a><tt class="py-lineno"> 22</tt>  <tt class="py-line"><tt class="py-docstring">    """</tt> </tt>
<a name="L23"></a><tt class="py-lineno"> 23</tt>  <tt class="py-line">    <tt class="py-keyword">if</tt> <tt class="py-name">len</tt><tt class="py-op">(</tt><tt class="py-name">packed_ip</tt><tt class="py-op">)</tt> <tt class="py-op">!=</tt> <tt class="py-number">4</tt> <tt class="py-keyword">or</tt> <tt class="py-keyword">not</tt> <tt class="py-name">hasattr</tt><tt class="py-op">(</tt><tt class="py-name">packed_ip</tt><tt class="py-op">,</tt> <tt class="py-string">'split'</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L24"></a><tt class="py-lineno"> 24</tt>  <tt class="py-line">        <tt class="py-keyword">raise</tt> <tt class="py-name">ValueError</tt><tt class="py-op">(</tt><tt class="py-string">'invalid length of packed IP address string'</tt><tt class="py-op">)</tt> </tt>
<a name="L25"></a><tt class="py-lineno"> 25</tt>  <tt class="py-line">    <tt class="py-keyword">return</tt> <tt class="py-string">'%d.%d.%d.%d'</tt> <tt class="py-op">%</tt> <tt class="py-name">_unpack</tt><tt class="py-op">(</tt><tt class="py-string">'4B'</tt><tt class="py-op">,</tt> <tt class="py-name">packed_ip</tt><tt class="py-op">)</tt> </tt>
</div><a name="L26"></a><tt class="py-lineno"> 26</tt>  <tt class="py-line"> </tt>
<a name="L27"></a><tt class="py-lineno"> 27</tt>  <tt class="py-line"><tt class="py-comment">#-----------------------------------------------------------------------------</tt> </tt>
<a name="inet_aton"></a><div id="inet_aton-def"><a name="L28"></a><tt class="py-lineno"> 28</tt> <a class="py-toggle" href="#" id="inet_aton-toggle" onclick="return toggle('inet_aton');">-</a><tt class="py-line"><tt class="py-comment"></tt><tt class="py-keyword">def</tt> <a class="py-def-name" href="netaddr.fallback-module.html#inet_aton">inet_aton</a><tt class="py-op">(</tt><tt class="py-param">ip_string</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="inet_aton-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="inet_aton-expanded"><a name="L29"></a><tt class="py-lineno"> 29</tt>  <tt class="py-line">    <tt class="py-docstring">"""</tt> </tt>
<a name="L30"></a><tt class="py-lineno"> 30</tt>  <tt class="py-line"><tt class="py-docstring">    Convert an IP address in string format (123.45.67.89) to the 32-bit packed</tt> </tt>
<a name="L31"></a><tt class="py-lineno"> 31</tt>  <tt class="py-line"><tt class="py-docstring">    binary format used in low-level network functions.</tt> </tt>
<a name="L32"></a><tt class="py-lineno"> 32</tt>  <tt class="py-line"><tt class="py-docstring">    """</tt> </tt>
<a name="L33"></a><tt class="py-lineno"> 33</tt>  <tt class="py-line">    <tt class="py-keyword">if</tt> <tt class="py-name">hasattr</tt><tt class="py-op">(</tt><tt class="py-name">ip_string</tt><tt class="py-op">,</tt> <tt class="py-string">'split'</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L34"></a><tt class="py-lineno"> 34</tt>  <tt class="py-line">        <tt class="py-name">invalid_addr</tt> <tt class="py-op">=</tt> <tt class="py-name">ValueError</tt><tt class="py-op">(</tt><tt class="py-string">'illegal IP address string %r'</tt> <tt class="py-op">%</tt> <tt class="py-name">ip_string</tt><tt class="py-op">)</tt> </tt>
<a name="L35"></a><tt class="py-lineno"> 35</tt>  <tt class="py-line">        <tt class="py-comment">#   Support for hexadecimal and octal octets.</tt> </tt>
<a name="L36"></a><tt class="py-lineno"> 36</tt>  <tt class="py-line"><tt class="py-comment"></tt>        <tt class="py-name">tokens</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-op">]</tt> </tt>
<a name="L37"></a><tt class="py-lineno"> 37</tt>  <tt class="py-line">        <tt class="py-name">base</tt> <tt class="py-op">=</tt> <tt class="py-number">10</tt> </tt>
<a name="L38"></a><tt class="py-lineno"> 38</tt>  <tt class="py-line">        <tt class="py-keyword">for</tt> <tt class="py-name">token</tt> <tt class="py-keyword">in</tt> <tt class="py-name">ip_string</tt><tt class="py-op">.</tt><tt class="py-name">split</tt><tt class="py-op">(</tt><tt class="py-string">'.'</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L39"></a><tt class="py-lineno"> 39</tt>  <tt class="py-line">            <tt class="py-keyword">if</tt> <tt class="py-name">token</tt><tt class="py-op">.</tt><tt class="py-name">startswith</tt><tt class="py-op">(</tt><tt class="py-string">'0x'</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L40"></a><tt class="py-lineno"> 40</tt>  <tt class="py-line">                <tt class="py-name">base</tt> <tt class="py-op">=</tt> <tt class="py-number">16</tt> </tt>
<a name="L41"></a><tt class="py-lineno"> 41</tt>  <tt class="py-line">            <tt class="py-keyword">elif</tt> <tt class="py-name">token</tt><tt class="py-op">.</tt><tt class="py-name">startswith</tt><tt class="py-op">(</tt><tt class="py-string">'0'</tt><tt class="py-op">)</tt> <tt class="py-keyword">and</tt> <tt class="py-name">len</tt><tt class="py-op">(</tt><tt class="py-name">token</tt><tt class="py-op">)</tt> <tt class="py-op">&gt;</tt> <tt class="py-number">1</tt><tt class="py-op">:</tt> </tt>
<a name="L42"></a><tt class="py-lineno"> 42</tt>  <tt class="py-line">                <tt class="py-name">base</tt> <tt class="py-op">=</tt> <tt class="py-number">8</tt> </tt>
<a name="L43"></a><tt class="py-lineno"> 43</tt>  <tt class="py-line">            <tt class="py-keyword">elif</tt> <tt class="py-name">token</tt> <tt class="py-op">==</tt> <tt class="py-string">''</tt><tt class="py-op">:</tt> </tt>
<a name="L44"></a><tt class="py-lineno"> 44</tt>  <tt class="py-line">                <tt class="py-keyword">continue</tt> </tt>
<a name="L45"></a><tt class="py-lineno"> 45</tt>  <tt class="py-line">            <tt class="py-keyword">try</tt><tt class="py-op">:</tt> </tt>
<a name="L46"></a><tt class="py-lineno"> 46</tt>  <tt class="py-line">                <tt class="py-name">tokens</tt><tt class="py-op">.</tt><tt class="py-name">append</tt><tt class="py-op">(</tt><tt class="py-name">int</tt><tt class="py-op">(</tt><tt class="py-name">token</tt><tt class="py-op">,</tt> <tt class="py-name">base</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L47"></a><tt class="py-lineno"> 47</tt>  <tt class="py-line">            <tt class="py-keyword">except</tt> <tt class="py-name">ValueError</tt><tt class="py-op">:</tt> </tt>
<a name="L48"></a><tt class="py-lineno"> 48</tt>  <tt class="py-line">                <tt class="py-keyword">raise</tt> <tt class="py-name">invalid_addr</tt> </tt>
<a name="L49"></a><tt class="py-lineno"> 49</tt>  <tt class="py-line"> </tt>
<a name="L50"></a><tt class="py-lineno"> 50</tt>  <tt class="py-line">        <tt class="py-comment">#   Zero fill missing octets.</tt> </tt>
<a name="L51"></a><tt class="py-lineno"> 51</tt>  <tt class="py-line"><tt class="py-comment"></tt>        <tt class="py-name">num_tokens</tt> <tt class="py-op">=</tt> <tt class="py-name">len</tt><tt class="py-op">(</tt><tt class="py-name">tokens</tt><tt class="py-op">)</tt> </tt>
<a name="L52"></a><tt class="py-lineno"> 52</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-name">num_tokens</tt> <tt class="py-op">&lt;</tt> <tt class="py-number">4</tt><tt class="py-op">:</tt> </tt>
<a name="L53"></a><tt class="py-lineno"> 53</tt>  <tt class="py-line">            <tt class="py-name">fill_tokens</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-number">0</tt><tt class="py-op">]</tt> <tt class="py-op">*</tt> <tt class="py-op">(</tt><tt class="py-number">4</tt> <tt class="py-op">-</tt> <tt class="py-name">num_tokens</tt><tt class="py-op">)</tt> </tt>
<a name="L54"></a><tt class="py-lineno"> 54</tt>  <tt class="py-line">            <tt class="py-keyword">if</tt> <tt class="py-name">num_tokens</tt> <tt class="py-op">&gt;</tt> <tt class="py-number">1</tt><tt class="py-op">:</tt> </tt>
<a name="L55"></a><tt class="py-lineno"> 55</tt>  <tt class="py-line">                <tt class="py-name">end_token</tt> <tt class="py-op">=</tt> <tt class="py-name">tokens</tt><tt class="py-op">.</tt><tt class="py-name">pop</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L56"></a><tt class="py-lineno"> 56</tt>  <tt class="py-line">                <tt class="py-name">tokens</tt> <tt class="py-op">=</tt> <tt class="py-name">tokens</tt> <tt class="py-op">+</tt> <tt class="py-name">fill_tokens</tt> <tt class="py-op">+</tt> <tt class="py-op">[</tt><tt class="py-name">end_token</tt><tt class="py-op">]</tt> </tt>
<a name="L57"></a><tt class="py-lineno"> 57</tt>  <tt class="py-line">            <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L58"></a><tt class="py-lineno"> 58</tt>  <tt class="py-line">                <tt class="py-name">tokens</tt> <tt class="py-op">=</tt> <tt class="py-name">tokens</tt> <tt class="py-op">+</tt> <tt class="py-name">fill_tokens</tt> </tt>
<a name="L59"></a><tt class="py-lineno"> 59</tt>  <tt class="py-line"> </tt>
<a name="L60"></a><tt class="py-lineno"> 60</tt>  <tt class="py-line">        <tt class="py-comment">#   Pack octets.</tt> </tt>
<a name="L61"></a><tt class="py-lineno"> 61</tt>  <tt class="py-line"><tt class="py-comment"></tt>        <tt class="py-keyword">if</tt> <tt class="py-name">len</tt><tt class="py-op">(</tt><tt class="py-name">tokens</tt><tt class="py-op">)</tt> <tt class="py-op">==</tt> <tt class="py-number">4</tt><tt class="py-op">:</tt> </tt>
<a name="L62"></a><tt class="py-lineno"> 62</tt>  <tt class="py-line">            <tt class="py-name">words</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-op">]</tt> </tt>
<a name="L63"></a><tt class="py-lineno"> 63</tt>  <tt class="py-line">            <tt class="py-keyword">for</tt> <tt class="py-name">token</tt> <tt class="py-keyword">in</tt> <tt class="py-name">tokens</tt><tt class="py-op">:</tt> </tt>
<a name="L64"></a><tt class="py-lineno"> 64</tt>  <tt class="py-line">                <tt class="py-keyword">if</tt> <tt class="py-op">(</tt><tt class="py-name">token</tt> <tt class="py-op">&gt;&gt;</tt> <tt class="py-number">8</tt><tt class="py-op">)</tt> <tt class="py-op">!=</tt> <tt class="py-number">0</tt><tt class="py-op">:</tt> </tt>
<a name="L65"></a><tt class="py-lineno"> 65</tt>  <tt class="py-line">                    <tt class="py-keyword">raise</tt> <tt class="py-name">invalid_addr</tt> </tt>
<a name="L66"></a><tt class="py-lineno"> 66</tt>  <tt class="py-line">                <tt class="py-name">words</tt><tt class="py-op">.</tt><tt class="py-name">append</tt><tt class="py-op">(</tt><tt class="py-name">chr</tt><tt class="py-op">(</tt><tt class="py-name">token</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L67"></a><tt class="py-lineno"> 67</tt>  <tt class="py-line">            <tt class="py-keyword">return</tt> <tt class="py-string">''</tt><tt class="py-op">.</tt><tt class="py-name">join</tt><tt class="py-op">(</tt><tt class="py-name">words</tt><tt class="py-op">)</tt> </tt>
<a name="L68"></a><tt class="py-lineno"> 68</tt>  <tt class="py-line">        <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L69"></a><tt class="py-lineno"> 69</tt>  <tt class="py-line">            <tt class="py-keyword">raise</tt> <tt class="py-name">invalid_addr</tt> </tt>
<a name="L70"></a><tt class="py-lineno"> 70</tt>  <tt class="py-line"> </tt>
<a name="L71"></a><tt class="py-lineno"> 71</tt>  <tt class="py-line">    <tt class="py-keyword">raise</tt> <tt class="py-name">ValueError</tt><tt class="py-op">(</tt><tt class="py-string">'argument should be a string, not %s'</tt> <tt class="py-op">%</tt> <tt class="py-name">type</tt><tt class="py-op">(</tt><tt class="py-name">ip_string</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
</div><a name="L72"></a><tt class="py-lineno"> 72</tt>  <tt class="py-line"> </tt>
<a name="L73"></a><tt class="py-lineno"> 73</tt>  <tt class="py-line"><tt class="py-comment">#-----------------------------------------------------------------------------</tt> </tt>
<a name="_compact_ipv6_tokens"></a><div id="_compact_ipv6_tokens-def"><a name="L74"></a><tt class="py-lineno"> 74</tt> <a class="py-toggle" href="#" id="_compact_ipv6_tokens-toggle" onclick="return toggle('_compact_ipv6_tokens');">-</a><tt class="py-line"><tt class="py-comment"></tt><tt class="py-keyword">def</tt> <a class="py-def-name" href="netaddr.fallback-module.html#_compact_ipv6_tokens">_compact_ipv6_tokens</a><tt class="py-op">(</tt><tt class="py-param">tokens</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="_compact_ipv6_tokens-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="_compact_ipv6_tokens-expanded"><a name="L75"></a><tt class="py-lineno"> 75</tt>  <tt class="py-line">    <tt class="py-name">new_tokens</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-op">]</tt> </tt>
<a name="L76"></a><tt class="py-lineno"> 76</tt>  <tt class="py-line"> </tt>
<a name="L77"></a><tt class="py-lineno"> 77</tt>  <tt class="py-line">    <tt class="py-name">positions</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-op">]</tt> </tt>
<a name="L78"></a><tt class="py-lineno"> 78</tt>  <tt class="py-line">    <tt class="py-name">within_run</tt> <tt class="py-op">=</tt> <tt class="py-name">False</tt> </tt>
<a name="L79"></a><tt class="py-lineno"> 79</tt>  <tt class="py-line">    <tt class="py-name">start_index</tt> <tt class="py-op">=</tt> <tt class="py-name">None</tt> </tt>
<a name="L80"></a><tt class="py-lineno"> 80</tt>  <tt class="py-line">    <tt class="py-name">num_tokens</tt> <tt class="py-op">=</tt> <tt class="py-number">0</tt> </tt>
<a name="L81"></a><tt class="py-lineno"> 81</tt>  <tt class="py-line"> </tt>
<a name="L82"></a><tt class="py-lineno"> 82</tt>  <tt class="py-line">    <tt class="py-comment">#   Discover all runs of zeros.</tt> </tt>
<a name="L83"></a><tt class="py-lineno"> 83</tt>  <tt class="py-line"><tt class="py-comment"></tt>    <tt class="py-keyword">for</tt> <tt class="py-name">idx</tt><tt class="py-op">,</tt> <tt class="py-name">token</tt> <tt class="py-keyword">in</tt> <tt class="py-name">enumerate</tt><tt class="py-op">(</tt><tt class="py-name">tokens</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L84"></a><tt class="py-lineno"> 84</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-name">token</tt> <tt class="py-op">==</tt> <tt class="py-string">'0'</tt><tt class="py-op">:</tt> </tt>
<a name="L85"></a><tt class="py-lineno"> 85</tt>  <tt class="py-line">            <tt class="py-name">within_run</tt> <tt class="py-op">=</tt> <tt class="py-name">True</tt> </tt>
<a name="L86"></a><tt class="py-lineno"> 86</tt>  <tt class="py-line">            <tt class="py-keyword">if</tt> <tt class="py-name">start_index</tt> <tt class="py-keyword">is</tt> <tt class="py-name">None</tt><tt class="py-op">:</tt> </tt>
<a name="L87"></a><tt class="py-lineno"> 87</tt>  <tt class="py-line">                <tt class="py-name">start_index</tt> <tt class="py-op">=</tt> <tt class="py-name">idx</tt> </tt>
<a name="L88"></a><tt class="py-lineno"> 88</tt>  <tt class="py-line">            <tt class="py-name">num_tokens</tt> <tt class="py-op">+=</tt> <tt class="py-number">1</tt> </tt>
<a name="L89"></a><tt class="py-lineno"> 89</tt>  <tt class="py-line">        <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L90"></a><tt class="py-lineno"> 90</tt>  <tt class="py-line">            <tt class="py-keyword">if</tt> <tt class="py-name">num_tokens</tt> <tt class="py-op">&gt;</tt> <tt class="py-number">1</tt><tt class="py-op">:</tt> </tt>
<a name="L91"></a><tt class="py-lineno"> 91</tt>  <tt class="py-line">                <tt class="py-name">positions</tt><tt class="py-op">.</tt><tt class="py-name">append</tt><tt class="py-op">(</tt><tt class="py-op">(</tt><tt class="py-name">num_tokens</tt><tt class="py-op">,</tt> <tt class="py-name">start_index</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L92"></a><tt class="py-lineno"> 92</tt>  <tt class="py-line">            <tt class="py-name">within_run</tt> <tt class="py-op">=</tt> <tt class="py-name">False</tt> </tt>
<a name="L93"></a><tt class="py-lineno"> 93</tt>  <tt class="py-line">            <tt class="py-name">start_index</tt> <tt class="py-op">=</tt> <tt class="py-name">None</tt> </tt>
<a name="L94"></a><tt class="py-lineno"> 94</tt>  <tt class="py-line">            <tt class="py-name">num_tokens</tt> <tt class="py-op">=</tt> <tt class="py-number">0</tt> </tt>
<a name="L95"></a><tt class="py-lineno"> 95</tt>  <tt class="py-line"> </tt>
<a name="L96"></a><tt class="py-lineno"> 96</tt>  <tt class="py-line">        <tt class="py-name">new_tokens</tt><tt class="py-op">.</tt><tt class="py-name">append</tt><tt class="py-op">(</tt><tt class="py-name">token</tt><tt class="py-op">)</tt> </tt>
<a name="L97"></a><tt class="py-lineno"> 97</tt>  <tt class="py-line"> </tt>
<a name="L98"></a><tt class="py-lineno"> 98</tt>  <tt class="py-line">    <tt class="py-comment">#   Store any position not saved before loop exit.</tt> </tt>
<a name="L99"></a><tt class="py-lineno"> 99</tt>  <tt class="py-line"><tt class="py-comment"></tt>    <tt class="py-keyword">if</tt> <tt class="py-name">num_tokens</tt> <tt class="py-op">&gt;</tt> <tt class="py-number">1</tt><tt class="py-op">:</tt> </tt>
<a name="L100"></a><tt class="py-lineno">100</tt>  <tt class="py-line">        <tt class="py-name">positions</tt><tt class="py-op">.</tt><tt class="py-name">append</tt><tt class="py-op">(</tt><tt class="py-op">(</tt><tt class="py-name">num_tokens</tt><tt class="py-op">,</tt> <tt class="py-name">start_index</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L101"></a><tt class="py-lineno">101</tt>  <tt class="py-line"> </tt>
<a name="L102"></a><tt class="py-lineno">102</tt>  <tt class="py-line">    <tt class="py-comment">#   Replace first longest run with an empty string.</tt> </tt>
<a name="L103"></a><tt class="py-lineno">103</tt>  <tt class="py-line"><tt class="py-comment"></tt>    <tt class="py-keyword">if</tt> <tt class="py-name">len</tt><tt class="py-op">(</tt><tt class="py-name">positions</tt><tt class="py-op">)</tt> <tt class="py-op">!=</tt> <tt class="py-number">0</tt><tt class="py-op">:</tt> </tt>
<a name="L104"></a><tt class="py-lineno">104</tt>  <tt class="py-line">        <tt class="py-comment">#   Locate longest, left-most run of zeros.</tt> </tt>
<a name="L105"></a><tt class="py-lineno">105</tt>  <tt class="py-line"><tt class="py-comment"></tt>        <tt class="py-name">positions</tt><tt class="py-op">.</tt><tt class="py-name">sort</tt><tt class="py-op">(</tt><tt class="py-keyword">lambda</tt> <tt class="py-name">x</tt><tt class="py-op">,</tt> <tt class="py-name">y</tt><tt class="py-op">:</tt> <tt class="py-name">cmp</tt><tt class="py-op">(</tt><tt class="py-name">x</tt><tt class="py-op">[</tt><tt class="py-number">1</tt><tt class="py-op">]</tt><tt class="py-op">,</tt> <tt class="py-name">y</tt><tt class="py-op">[</tt><tt class="py-number">1</tt><tt class="py-op">]</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L106"></a><tt class="py-lineno">106</tt>  <tt class="py-line">        <tt class="py-name">best_position</tt> <tt class="py-op">=</tt> <tt class="py-name">positions</tt><tt class="py-op">[</tt><tt class="py-number">0</tt><tt class="py-op">]</tt> </tt>
<a name="L107"></a><tt class="py-lineno">107</tt>  <tt class="py-line">        <tt class="py-keyword">for</tt> <tt class="py-name">position</tt> <tt class="py-keyword">in</tt> <tt class="py-name">positions</tt><tt class="py-op">:</tt> </tt>
<a name="L108"></a><tt class="py-lineno">108</tt>  <tt class="py-line">            <tt class="py-keyword">if</tt> <tt class="py-name">position</tt><tt class="py-op">[</tt><tt class="py-number">0</tt><tt class="py-op">]</tt> <tt class="py-op">&gt;</tt> <tt class="py-name">best_position</tt><tt class="py-op">[</tt><tt class="py-number">0</tt><tt class="py-op">]</tt><tt class="py-op">:</tt> </tt>
<a name="L109"></a><tt class="py-lineno">109</tt>  <tt class="py-line">                <tt class="py-name">best_position</tt> <tt class="py-op">=</tt> <tt class="py-name">position</tt> </tt>
<a name="L110"></a><tt class="py-lineno">110</tt>  <tt class="py-line">        <tt class="py-comment">#   Replace chosen zero run.</tt> </tt>
<a name="L111"></a><tt class="py-lineno">111</tt>  <tt class="py-line"><tt class="py-comment"></tt>        <tt class="py-op">(</tt><tt class="py-name">length</tt><tt class="py-op">,</tt> <tt class="py-name">start_idx</tt><tt class="py-op">)</tt> <tt class="py-op">=</tt> <tt class="py-name">best_position</tt> </tt>
<a name="L112"></a><tt class="py-lineno">112</tt>  <tt class="py-line">        <tt class="py-name">new_tokens</tt> <tt class="py-op">=</tt> <tt class="py-name">new_tokens</tt><tt class="py-op">[</tt><tt class="py-number">0</tt><tt class="py-op">:</tt><tt class="py-name">start_idx</tt><tt class="py-op">]</tt> <tt class="py-op">+</tt> <tt class="py-op">[</tt><tt class="py-string">''</tt><tt class="py-op">]</tt> <tt class="py-op">+</tt> \ </tt>
<a name="L113"></a><tt class="py-lineno">113</tt>  <tt class="py-line">                     <tt class="py-name">new_tokens</tt><tt class="py-op">[</tt><tt class="py-name">start_idx</tt><tt class="py-op">+</tt><tt class="py-name">length</tt><tt class="py-op">:</tt><tt class="py-op">]</tt> </tt>
<a name="L114"></a><tt class="py-lineno">114</tt>  <tt class="py-line"> </tt>
<a name="L115"></a><tt class="py-lineno">115</tt>  <tt class="py-line">        <tt class="py-comment">#   Add start and end blanks so join creates '::'.</tt> </tt>
<a name="L116"></a><tt class="py-lineno">116</tt>  <tt class="py-line"><tt class="py-comment"></tt>        <tt class="py-keyword">if</tt> <tt class="py-name">new_tokens</tt><tt class="py-op">[</tt><tt class="py-number">0</tt><tt class="py-op">]</tt> <tt class="py-op">==</tt> <tt class="py-string">''</tt><tt class="py-op">:</tt> </tt>
<a name="L117"></a><tt class="py-lineno">117</tt>  <tt class="py-line">            <tt class="py-name">new_tokens</tt><tt class="py-op">.</tt><tt class="py-name">insert</tt><tt class="py-op">(</tt><tt class="py-number">0</tt><tt class="py-op">,</tt> <tt class="py-string">''</tt><tt class="py-op">)</tt> </tt>
<a name="L118"></a><tt class="py-lineno">118</tt>  <tt class="py-line"> </tt>
<a name="L119"></a><tt class="py-lineno">119</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-name">new_tokens</tt><tt class="py-op">[</tt><tt class="py-op">-</tt><tt class="py-number">1</tt><tt class="py-op">]</tt> <tt class="py-op">==</tt> <tt class="py-string">''</tt><tt class="py-op">:</tt> </tt>
<a name="L120"></a><tt class="py-lineno">120</tt>  <tt class="py-line">            <tt class="py-name">new_tokens</tt><tt class="py-op">.</tt><tt class="py-name">append</tt><tt class="py-op">(</tt><tt class="py-string">''</tt><tt class="py-op">)</tt> </tt>
<a name="L121"></a><tt class="py-lineno">121</tt>  <tt class="py-line"> </tt>
<a name="L122"></a><tt class="py-lineno">122</tt>  <tt class="py-line">    <tt class="py-keyword">return</tt> <tt class="py-name">new_tokens</tt> </tt>
</div><a name="L123"></a><tt class="py-lineno">123</tt>  <tt class="py-line"> </tt>
<a name="L124"></a><tt class="py-lineno">124</tt>  <tt class="py-line"><tt class="py-comment">#-----------------------------------------------------------------------------</tt> </tt>
<a name="inet_ntop"></a><div id="inet_ntop-def"><a name="L125"></a><tt class="py-lineno">125</tt> <a class="py-toggle" href="#" id="inet_ntop-toggle" onclick="return toggle('inet_ntop');">-</a><tt class="py-line"><tt class="py-comment"></tt><tt class="py-keyword">def</tt> <a class="py-def-name" href="netaddr.fallback-module.html#inet_ntop">inet_ntop</a><tt class="py-op">(</tt><tt class="py-param">af</tt><tt class="py-op">,</tt> <tt class="py-param">packed_ip</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="inet_ntop-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="inet_ntop-expanded"><a name="L126"></a><tt class="py-lineno">126</tt>  <tt class="py-line">    <tt class="py-docstring">"""Convert an packed IP address of the given family to string format."""</tt> </tt>
<a name="L127"></a><tt class="py-lineno">127</tt>  <tt class="py-line">    <tt class="py-keyword">if</tt> <tt class="py-name">af</tt> <tt class="py-op">==</tt> <tt id="link-3" class="py-name"><a title="netaddr.fallback.AF_INET" class="py-name" href="#" onclick="return doclink('link-3', 'AF_INET', 'link-1');">AF_INET</a></tt><tt class="py-op">:</tt> </tt>
<a name="L128"></a><tt class="py-lineno">128</tt>  <tt class="py-line">        <tt class="py-comment">#   IPv4.</tt> </tt>
<a name="L129"></a><tt class="py-lineno">129</tt>  <tt class="py-line"><tt class="py-comment"></tt>        <tt class="py-keyword">return</tt> <tt id="link-4" class="py-name" targets="Function netaddr.fallback.inet_ntoa()=netaddr.fallback-module.html#inet_ntoa"><a title="netaddr.fallback.inet_ntoa" class="py-name" href="#" onclick="return doclink('link-4', 'inet_ntoa', 'link-4');">inet_ntoa</a></tt><tt class="py-op">(</tt><tt class="py-name">packed_ip</tt><tt class="py-op">)</tt> </tt>
<a name="L130"></a><tt class="py-lineno">130</tt>  <tt class="py-line">    <tt class="py-keyword">elif</tt> <tt class="py-name">af</tt> <tt class="py-op">==</tt> <tt id="link-5" class="py-name"><a title="netaddr.fallback.AF_INET6" class="py-name" href="#" onclick="return doclink('link-5', 'AF_INET6', 'link-2');">AF_INET6</a></tt><tt class="py-op">:</tt> </tt>
<a name="L131"></a><tt class="py-lineno">131</tt>  <tt class="py-line">        <tt class="py-comment">#   IPv6.</tt> </tt>
<a name="L132"></a><tt class="py-lineno">132</tt>  <tt class="py-line"><tt class="py-comment"></tt>        <tt class="py-keyword">if</tt> <tt class="py-name">len</tt><tt class="py-op">(</tt><tt class="py-name">packed_ip</tt><tt class="py-op">)</tt> <tt class="py-op">!=</tt> <tt class="py-number">16</tt> <tt class="py-keyword">or</tt> <tt class="py-keyword">not</tt> <tt class="py-name">hasattr</tt><tt class="py-op">(</tt><tt class="py-name">packed_ip</tt><tt class="py-op">,</tt> <tt class="py-string">'split'</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L133"></a><tt class="py-lineno">133</tt>  <tt class="py-line">            <tt class="py-keyword">raise</tt> <tt class="py-name">ValueError</tt><tt class="py-op">(</tt><tt class="py-string">'invalid length of packed IP address string'</tt><tt class="py-op">)</tt> </tt>
<a name="L134"></a><tt class="py-lineno">134</tt>  <tt class="py-line"> </tt>
<a name="L135"></a><tt class="py-lineno">135</tt>  <tt class="py-line">        <tt class="py-name">tokens</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-string">'%x'</tt> <tt class="py-op">%</tt> <tt class="py-name">i</tt> <tt class="py-keyword">for</tt> <tt class="py-name">i</tt> <tt class="py-keyword">in</tt> <tt class="py-name">_unpack</tt><tt class="py-op">(</tt><tt class="py-string">'&gt;8H'</tt><tt class="py-op">,</tt> <tt class="py-name">packed_ip</tt><tt class="py-op">)</tt><tt class="py-op">]</tt> </tt>
<a name="L136"></a><tt class="py-lineno">136</tt>  <tt class="py-line"> </tt>
<a name="L137"></a><tt class="py-lineno">137</tt>  <tt class="py-line">        <tt class="py-comment">#   Convert packed address to an integer value.</tt> </tt>
<a name="L138"></a><tt class="py-lineno">138</tt>  <tt class="py-line"><tt class="py-comment"></tt>        <tt class="py-name">words</tt> <tt class="py-op">=</tt> <tt class="py-name">list</tt><tt class="py-op">(</tt><tt class="py-name">_unpack</tt><tt class="py-op">(</tt><tt class="py-string">'&gt;8H'</tt><tt class="py-op">,</tt> <tt class="py-name">packed_ip</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L139"></a><tt class="py-lineno">139</tt>  <tt class="py-line">        <tt class="py-name">int_val</tt> <tt class="py-op">=</tt> <tt class="py-number">0</tt> </tt>
<a name="L140"></a><tt class="py-lineno">140</tt>  <tt class="py-line">        <tt class="py-keyword">for</tt> <tt class="py-name">i</tt><tt class="py-op">,</tt> <tt class="py-name">num</tt> <tt class="py-keyword">in</tt> <tt class="py-name">enumerate</tt><tt class="py-op">(</tt><tt class="py-name">reversed</tt><tt class="py-op">(</tt><tt class="py-name">words</tt><tt class="py-op">)</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L141"></a><tt class="py-lineno">141</tt>  <tt class="py-line">            <tt class="py-name">word</tt> <tt class="py-op">=</tt> <tt class="py-name">num</tt> </tt>
<a name="L142"></a><tt class="py-lineno">142</tt>  <tt class="py-line">            <tt class="py-name">word</tt> <tt class="py-op">=</tt> <tt class="py-name">word</tt> <tt class="py-op">&lt;&lt;</tt> <tt class="py-number">16</tt> <tt class="py-op">*</tt> <tt class="py-name">i</tt> </tt>
<a name="L143"></a><tt class="py-lineno">143</tt>  <tt class="py-line">            <tt class="py-name">int_val</tt> <tt class="py-op">=</tt> <tt class="py-name">int_val</tt> <tt class="py-op">|</tt> <tt class="py-name">word</tt> </tt>
<a name="L144"></a><tt class="py-lineno">144</tt>  <tt class="py-line"> </tt>
<a name="L145"></a><tt class="py-lineno">145</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-number">0xffff</tt> <tt class="py-op">&lt;</tt> <tt class="py-name">int_val</tt> <tt class="py-op">&lt;=</tt> <tt class="py-number">0xffffffff</tt> <tt class="py-keyword">or</tt> <tt class="py-name">int_val</tt> <tt class="py-op">&gt;&gt;</tt> <tt class="py-number">32</tt> <tt class="py-op">==</tt> <tt class="py-number">0xffff</tt><tt class="py-op">:</tt> </tt>
<a name="L146"></a><tt class="py-lineno">146</tt>  <tt class="py-line">            <tt class="py-comment">#   IPv4 compatible / mapped IPv6.</tt> </tt>
<a name="L147"></a><tt class="py-lineno">147</tt>  <tt class="py-line"><tt class="py-comment"></tt>            <tt class="py-name">packed_ipv4</tt> <tt class="py-op">=</tt> <tt class="py-name">_pack</tt><tt class="py-op">(</tt><tt class="py-string">'&gt;2H'</tt><tt class="py-op">,</tt> <tt class="py-op">*</tt><tt class="py-op">[</tt><tt class="py-name">int</tt><tt class="py-op">(</tt><tt class="py-name">i</tt><tt class="py-op">,</tt> <tt class="py-number">16</tt><tt class="py-op">)</tt> <tt class="py-keyword">for</tt> <tt class="py-name">i</tt> <tt class="py-keyword">in</tt> <tt class="py-name">tokens</tt><tt class="py-op">[</tt><tt class="py-op">-</tt><tt class="py-number">2</tt><tt class="py-op">:</tt><tt class="py-op">]</tt><tt class="py-op">]</tt><tt class="py-op">)</tt> </tt>
<a name="L148"></a><tt class="py-lineno">148</tt>  <tt class="py-line">            <tt class="py-name">ipv4_str</tt> <tt class="py-op">=</tt> <tt id="link-6" class="py-name"><a title="netaddr.fallback.inet_ntoa" class="py-name" href="#" onclick="return doclink('link-6', 'inet_ntoa', 'link-4');">inet_ntoa</a></tt><tt class="py-op">(</tt><tt class="py-name">packed_ipv4</tt><tt class="py-op">)</tt> </tt>
<a name="L149"></a><tt class="py-lineno">149</tt>  <tt class="py-line">            <tt class="py-name">tokens</tt> <tt class="py-op">=</tt> <tt class="py-name">tokens</tt><tt class="py-op">[</tt><tt class="py-number">0</tt><tt class="py-op">:</tt><tt class="py-op">-</tt><tt class="py-number">2</tt><tt class="py-op">]</tt> <tt class="py-op">+</tt> <tt class="py-op">[</tt><tt class="py-name">ipv4_str</tt><tt class="py-op">]</tt> </tt>
<a name="L150"></a><tt class="py-lineno">150</tt>  <tt class="py-line"> </tt>
<a name="L151"></a><tt class="py-lineno">151</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-string">':'</tt><tt class="py-op">.</tt><tt class="py-name">join</tt><tt class="py-op">(</tt><tt id="link-7" class="py-name" targets="Function netaddr.fallback._compact_ipv6_tokens()=netaddr.fallback-module.html#_compact_ipv6_tokens"><a title="netaddr.fallback._compact_ipv6_tokens" class="py-name" href="#" onclick="return doclink('link-7', '_compact_ipv6_tokens', 'link-7');">_compact_ipv6_tokens</a></tt><tt class="py-op">(</tt><tt class="py-name">tokens</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L152"></a><tt class="py-lineno">152</tt>  <tt class="py-line">    <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L153"></a><tt class="py-lineno">153</tt>  <tt class="py-line">        <tt class="py-keyword">raise</tt> <tt class="py-name">ValueError</tt><tt class="py-op">(</tt><tt class="py-string">'unknown address family %d'</tt> <tt class="py-op">%</tt> <tt class="py-name">af</tt><tt class="py-op">)</tt> </tt>
</div><a name="L154"></a><tt class="py-lineno">154</tt>  <tt class="py-line"> </tt>
<a name="L155"></a><tt class="py-lineno">155</tt>  <tt class="py-line"><tt class="py-comment">#-----------------------------------------------------------------------------</tt> </tt>
<a name="inet_pton"></a><div id="inet_pton-def"><a name="L156"></a><tt class="py-lineno">156</tt> <a class="py-toggle" href="#" id="inet_pton-toggle" onclick="return toggle('inet_pton');">-</a><tt class="py-line"><tt class="py-comment"></tt><tt class="py-keyword">def</tt> <a class="py-def-name" href="netaddr.fallback-module.html#inet_pton">inet_pton</a><tt class="py-op">(</tt><tt class="py-param">af</tt><tt class="py-op">,</tt> <tt class="py-param">ip_string</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="inet_pton-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="inet_pton-expanded"><a name="L157"></a><tt class="py-lineno">157</tt>  <tt class="py-line">    <tt class="py-docstring">"""</tt> </tt>
<a name="L158"></a><tt class="py-lineno">158</tt>  <tt class="py-line"><tt class="py-docstring">    Convert an IP address from string format to a packed string suitable for</tt> </tt>
<a name="L159"></a><tt class="py-lineno">159</tt>  <tt class="py-line"><tt class="py-docstring">    use with low-level network functions.</tt> </tt>
<a name="L160"></a><tt class="py-lineno">160</tt>  <tt class="py-line"><tt class="py-docstring">    """</tt> </tt>
<a name="L161"></a><tt class="py-lineno">161</tt>  <tt class="py-line">    <tt class="py-keyword">if</tt> <tt class="py-name">af</tt> <tt class="py-op">==</tt> <tt id="link-8" class="py-name"><a title="netaddr.fallback.AF_INET" class="py-name" href="#" onclick="return doclink('link-8', 'AF_INET', 'link-1');">AF_INET</a></tt><tt class="py-op">:</tt> </tt>
<a name="L162"></a><tt class="py-lineno">162</tt>  <tt class="py-line">        <tt class="py-comment">#   IPv4.</tt> </tt>
<a name="L163"></a><tt class="py-lineno">163</tt>  <tt class="py-line"><tt class="py-comment"></tt>        <tt class="py-keyword">return</tt> <tt id="link-9" class="py-name" targets="Function netaddr.fallback.inet_aton()=netaddr.fallback-module.html#inet_aton"><a title="netaddr.fallback.inet_aton" class="py-name" href="#" onclick="return doclink('link-9', 'inet_aton', 'link-9');">inet_aton</a></tt><tt class="py-op">(</tt><tt class="py-name">ip_string</tt><tt class="py-op">)</tt> </tt>
<a name="L164"></a><tt class="py-lineno">164</tt>  <tt class="py-line">    <tt class="py-keyword">elif</tt> <tt class="py-name">af</tt> <tt class="py-op">==</tt> <tt id="link-10" class="py-name"><a title="netaddr.fallback.AF_INET6" class="py-name" href="#" onclick="return doclink('link-10', 'AF_INET6', 'link-2');">AF_INET6</a></tt><tt class="py-op">:</tt> </tt>
<a name="L165"></a><tt class="py-lineno">165</tt>  <tt class="py-line">        <tt class="py-name">invalid_addr</tt> <tt class="py-op">=</tt> <tt class="py-name">ValueError</tt><tt class="py-op">(</tt><tt class="py-string">'illegal IP address string %r'</tt> <tt class="py-op">%</tt> <tt class="py-name">ip_string</tt><tt class="py-op">)</tt> </tt>
<a name="L166"></a><tt class="py-lineno">166</tt>  <tt class="py-line">        <tt class="py-comment">#   IPv6.</tt> </tt>
<a name="L167"></a><tt class="py-lineno">167</tt>  <tt class="py-line"><tt class="py-comment"></tt>        <tt class="py-name">values</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-op">]</tt> </tt>
<a name="L168"></a><tt class="py-lineno">168</tt>  <tt class="py-line"> </tt>
<a name="L169"></a><tt class="py-lineno">169</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-keyword">not</tt> <tt class="py-name">hasattr</tt><tt class="py-op">(</tt><tt class="py-name">ip_string</tt><tt class="py-op">,</tt> <tt class="py-string">'split'</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L170"></a><tt class="py-lineno">170</tt>  <tt class="py-line">            <tt class="py-keyword">raise</tt> <tt class="py-name">invalid_addr</tt> </tt>
<a name="L171"></a><tt class="py-lineno">171</tt>  <tt class="py-line"> </tt>
<a name="L172"></a><tt class="py-lineno">172</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-string">'::'</tt> <tt class="py-keyword">in</tt> <tt class="py-name">ip_string</tt><tt class="py-op">:</tt> </tt>
<a name="L173"></a><tt class="py-lineno">173</tt>  <tt class="py-line">            <tt class="py-keyword">if</tt> <tt class="py-name">ip_string</tt> <tt class="py-op">==</tt> <tt class="py-string">'::'</tt><tt class="py-op">:</tt> </tt>
<a name="L174"></a><tt class="py-lineno">174</tt>  <tt class="py-line">                <tt class="py-comment">#   Unspecified address.</tt> </tt>
<a name="L175"></a><tt class="py-lineno">175</tt>  <tt class="py-line"><tt class="py-comment"></tt>                <tt class="py-keyword">return</tt> <tt class="py-string">'\x00'</tt><tt class="py-op">*</tt><tt class="py-number">16</tt> </tt>
<a name="L176"></a><tt class="py-lineno">176</tt>  <tt class="py-line">            <tt class="py-comment">#   IPv6 compact mode.</tt> </tt>
<a name="L177"></a><tt class="py-lineno">177</tt>  <tt class="py-line"><tt class="py-comment"></tt>            <tt class="py-keyword">try</tt><tt class="py-op">:</tt> </tt>
<a name="L178"></a><tt class="py-lineno">178</tt>  <tt class="py-line">                <tt class="py-name">prefix</tt><tt class="py-op">,</tt> <tt class="py-name">suffix</tt> <tt class="py-op">=</tt> <tt class="py-name">ip_string</tt><tt class="py-op">.</tt><tt class="py-name">split</tt><tt class="py-op">(</tt><tt class="py-string">'::'</tt><tt class="py-op">)</tt> </tt>
<a name="L179"></a><tt class="py-lineno">179</tt>  <tt class="py-line">            <tt class="py-keyword">except</tt> <tt class="py-name">ValueError</tt><tt class="py-op">:</tt> </tt>
<a name="L180"></a><tt class="py-lineno">180</tt>  <tt class="py-line">                <tt class="py-keyword">raise</tt> <tt class="py-name">invalid_addr</tt> </tt>
<a name="L181"></a><tt class="py-lineno">181</tt>  <tt class="py-line"> </tt>
<a name="L182"></a><tt class="py-lineno">182</tt>  <tt class="py-line">            <tt class="py-name">l_prefix</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-op">]</tt> </tt>
<a name="L183"></a><tt class="py-lineno">183</tt>  <tt class="py-line">            <tt class="py-name">l_suffix</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-op">]</tt> </tt>
<a name="L184"></a><tt class="py-lineno">184</tt>  <tt class="py-line"> </tt>
<a name="L185"></a><tt class="py-lineno">185</tt>  <tt class="py-line">            <tt class="py-keyword">if</tt> <tt class="py-name">prefix</tt> <tt class="py-op">!=</tt> <tt class="py-string">''</tt><tt class="py-op">:</tt> </tt>
<a name="L186"></a><tt class="py-lineno">186</tt>  <tt class="py-line">                <tt class="py-name">l_prefix</tt> <tt class="py-op">=</tt> <tt class="py-name">prefix</tt><tt class="py-op">.</tt><tt class="py-name">split</tt><tt class="py-op">(</tt><tt class="py-string">':'</tt><tt class="py-op">)</tt> </tt>
<a name="L187"></a><tt class="py-lineno">187</tt>  <tt class="py-line"> </tt>
<a name="L188"></a><tt class="py-lineno">188</tt>  <tt class="py-line">            <tt class="py-keyword">if</tt> <tt class="py-name">suffix</tt> <tt class="py-op">!=</tt> <tt class="py-string">''</tt><tt class="py-op">:</tt> </tt>
<a name="L189"></a><tt class="py-lineno">189</tt>  <tt class="py-line">                <tt class="py-name">l_suffix</tt> <tt class="py-op">=</tt> <tt class="py-name">suffix</tt><tt class="py-op">.</tt><tt class="py-name">split</tt><tt class="py-op">(</tt><tt class="py-string">':'</tt><tt class="py-op">)</tt> </tt>
<a name="L190"></a><tt class="py-lineno">190</tt>  <tt class="py-line"> </tt>
<a name="L191"></a><tt class="py-lineno">191</tt>  <tt class="py-line">            <tt class="py-comment">#   IPv6 compact IPv4 compatibility mode.</tt> </tt>
<a name="L192"></a><tt class="py-lineno">192</tt>  <tt class="py-line"><tt class="py-comment"></tt>            <tt class="py-keyword">if</tt> <tt class="py-name">len</tt><tt class="py-op">(</tt><tt class="py-name">l_suffix</tt><tt class="py-op">)</tt> <tt class="py-keyword">and</tt> <tt class="py-string">'.'</tt> <tt class="py-keyword">in</tt> <tt class="py-name">l_suffix</tt><tt class="py-op">[</tt><tt class="py-op">-</tt><tt class="py-number">1</tt><tt class="py-op">]</tt><tt class="py-op">:</tt> </tt>
<a name="L193"></a><tt class="py-lineno">193</tt>  <tt class="py-line">                <tt class="py-name">ipv4_str</tt> <tt class="py-op">=</tt> <tt id="link-11" class="py-name"><a title="netaddr.fallback.inet_aton" class="py-name" href="#" onclick="return doclink('link-11', 'inet_aton', 'link-9');">inet_aton</a></tt><tt class="py-op">(</tt><tt class="py-name">l_suffix</tt><tt class="py-op">.</tt><tt class="py-name">pop</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L194"></a><tt class="py-lineno">194</tt>  <tt class="py-line">                <tt class="py-name">l_suffix</tt><tt class="py-op">.</tt><tt class="py-name">append</tt><tt class="py-op">(</tt><tt class="py-string">'%x'</tt> <tt class="py-op">%</tt> <tt class="py-name">_unpack</tt><tt class="py-op">(</tt><tt class="py-string">'&gt;H'</tt><tt class="py-op">,</tt> <tt class="py-name">ipv4_str</tt><tt class="py-op">[</tt><tt class="py-number">0</tt><tt class="py-op">:</tt><tt class="py-number">2</tt><tt class="py-op">]</tt><tt class="py-op">)</tt><tt class="py-op">[</tt><tt class="py-number">0</tt><tt class="py-op">]</tt><tt class="py-op">)</tt> </tt>
<a name="L195"></a><tt class="py-lineno">195</tt>  <tt class="py-line">                <tt class="py-name">l_suffix</tt><tt class="py-op">.</tt><tt class="py-name">append</tt><tt class="py-op">(</tt><tt class="py-string">'%x'</tt> <tt class="py-op">%</tt> <tt class="py-name">_unpack</tt><tt class="py-op">(</tt><tt class="py-string">'&gt;H'</tt><tt class="py-op">,</tt> <tt class="py-name">ipv4_str</tt><tt class="py-op">[</tt><tt class="py-number">2</tt><tt class="py-op">:</tt><tt class="py-number">4</tt><tt class="py-op">]</tt><tt class="py-op">)</tt><tt class="py-op">[</tt><tt class="py-number">0</tt><tt class="py-op">]</tt><tt class="py-op">)</tt> </tt>
<a name="L196"></a><tt class="py-lineno">196</tt>  <tt class="py-line"> </tt>
<a name="L197"></a><tt class="py-lineno">197</tt>  <tt class="py-line">            <tt class="py-name">token_count</tt> <tt class="py-op">=</tt> <tt class="py-name">len</tt><tt class="py-op">(</tt><tt class="py-name">l_prefix</tt><tt class="py-op">)</tt> <tt class="py-op">+</tt> <tt class="py-name">len</tt><tt class="py-op">(</tt><tt class="py-name">l_suffix</tt><tt class="py-op">)</tt> </tt>
<a name="L198"></a><tt class="py-lineno">198</tt>  <tt class="py-line"> </tt>
<a name="L199"></a><tt class="py-lineno">199</tt>  <tt class="py-line">            <tt class="py-keyword">if</tt> <tt class="py-keyword">not</tt> <tt class="py-number">0</tt> <tt class="py-op">&lt;=</tt> <tt class="py-name">token_count</tt> <tt class="py-op">&lt;=</tt> <tt class="py-number">8</tt> <tt class="py-op">-</tt> <tt class="py-number">1</tt><tt class="py-op">:</tt> </tt>
<a name="L200"></a><tt class="py-lineno">200</tt>  <tt class="py-line">                <tt class="py-keyword">raise</tt> <tt class="py-name">invalid_addr</tt> </tt>
<a name="L201"></a><tt class="py-lineno">201</tt>  <tt class="py-line"> </tt>
<a name="L202"></a><tt class="py-lineno">202</tt>  <tt class="py-line">            <tt class="py-name">gap_size</tt> <tt class="py-op">=</tt> <tt class="py-number">8</tt> <tt class="py-op">-</tt> <tt class="py-op">(</tt> <tt class="py-name">len</tt><tt class="py-op">(</tt><tt class="py-name">l_prefix</tt><tt class="py-op">)</tt> <tt class="py-op">+</tt> <tt class="py-name">len</tt><tt class="py-op">(</tt><tt class="py-name">l_suffix</tt><tt class="py-op">)</tt> <tt class="py-op">)</tt> </tt>
<a name="L203"></a><tt class="py-lineno">203</tt>  <tt class="py-line"> </tt>
<a name="L204"></a><tt class="py-lineno">204</tt>  <tt class="py-line">            <tt class="py-name">values</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-name">_pack</tt><tt class="py-op">(</tt><tt class="py-string">'&gt;H'</tt><tt class="py-op">,</tt> <tt class="py-name">int</tt><tt class="py-op">(</tt><tt class="py-name">i</tt><tt class="py-op">,</tt> <tt class="py-number">16</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> <tt class="py-keyword">for</tt> <tt class="py-name">i</tt> <tt class="py-keyword">in</tt> <tt class="py-name">l_prefix</tt><tt class="py-op">]</tt> \ </tt>
<a name="L205"></a><tt class="py-lineno">205</tt>  <tt class="py-line">                   <tt class="py-op">+</tt> <tt class="py-op">[</tt><tt class="py-string">'\x00\x00'</tt> <tt class="py-keyword">for</tt> <tt class="py-name">i</tt> <tt class="py-keyword">in</tt> <tt class="py-name">range</tt><tt class="py-op">(</tt><tt class="py-name">gap_size</tt><tt class="py-op">)</tt><tt class="py-op">]</tt> \ </tt>
<a name="L206"></a><tt class="py-lineno">206</tt>  <tt class="py-line">                   <tt class="py-op">+</tt> <tt class="py-op">[</tt><tt class="py-name">_pack</tt><tt class="py-op">(</tt><tt class="py-string">'&gt;H'</tt><tt class="py-op">,</tt> <tt class="py-name">int</tt><tt class="py-op">(</tt><tt class="py-name">i</tt><tt class="py-op">,</tt> <tt class="py-number">16</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> <tt class="py-keyword">for</tt> <tt class="py-name">i</tt> <tt class="py-keyword">in</tt> <tt class="py-name">l_suffix</tt><tt class="py-op">]</tt> </tt>
<a name="L207"></a><tt class="py-lineno">207</tt>  <tt class="py-line">            <tt class="py-keyword">try</tt><tt class="py-op">:</tt> </tt>
<a name="L208"></a><tt class="py-lineno">208</tt>  <tt class="py-line">                <tt class="py-keyword">for</tt> <tt class="py-name">token</tt> <tt class="py-keyword">in</tt> <tt class="py-name">l_prefix</tt> <tt class="py-op">+</tt> <tt class="py-name">l_suffix</tt><tt class="py-op">:</tt> </tt>
<a name="L209"></a><tt class="py-lineno">209</tt>  <tt class="py-line">                    <tt class="py-name">word</tt> <tt class="py-op">=</tt> <tt class="py-name">int</tt><tt class="py-op">(</tt><tt class="py-name">token</tt><tt class="py-op">,</tt> <tt class="py-number">16</tt><tt class="py-op">)</tt> </tt>
<a name="L210"></a><tt class="py-lineno">210</tt>  <tt class="py-line">                    <tt class="py-keyword">if</tt> <tt class="py-keyword">not</tt> <tt class="py-number">0</tt> <tt class="py-op">&lt;=</tt> <tt class="py-name">word</tt> <tt class="py-op">&lt;=</tt> <tt class="py-number">0xffff</tt><tt class="py-op">:</tt> </tt>
<a name="L211"></a><tt class="py-lineno">211</tt>  <tt class="py-line">                        <tt class="py-keyword">raise</tt> <tt class="py-name">invalid_addr</tt> </tt>
<a name="L212"></a><tt class="py-lineno">212</tt>  <tt class="py-line">            <tt class="py-keyword">except</tt> <tt class="py-name">ValueError</tt><tt class="py-op">:</tt> </tt>
<a name="L213"></a><tt class="py-lineno">213</tt>  <tt class="py-line">                <tt class="py-keyword">raise</tt> <tt class="py-name">invalid_addr</tt> </tt>
<a name="L214"></a><tt class="py-lineno">214</tt>  <tt class="py-line">        <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L215"></a><tt class="py-lineno">215</tt>  <tt class="py-line">            <tt class="py-comment">#   IPv6 verbose mode.</tt> </tt>
<a name="L216"></a><tt class="py-lineno">216</tt>  <tt class="py-line"><tt class="py-comment"></tt>            <tt class="py-keyword">if</tt> <tt class="py-string">':'</tt> <tt class="py-keyword">in</tt> <tt class="py-name">ip_string</tt><tt class="py-op">:</tt> </tt>
<a name="L217"></a><tt class="py-lineno">217</tt>  <tt class="py-line">                <tt class="py-name">tokens</tt> <tt class="py-op">=</tt> <tt class="py-name">ip_string</tt><tt class="py-op">.</tt><tt class="py-name">split</tt><tt class="py-op">(</tt><tt class="py-string">':'</tt><tt class="py-op">)</tt> </tt>
<a name="L218"></a><tt class="py-lineno">218</tt>  <tt class="py-line"> </tt>
<a name="L219"></a><tt class="py-lineno">219</tt>  <tt class="py-line">                <tt class="py-keyword">if</tt> <tt class="py-string">'.'</tt> <tt class="py-keyword">in</tt> <tt class="py-name">ip_string</tt><tt class="py-op">:</tt> </tt>
<a name="L220"></a><tt class="py-lineno">220</tt>  <tt class="py-line">                    <tt class="py-name">ipv6_prefix</tt> <tt class="py-op">=</tt> <tt class="py-name">tokens</tt><tt class="py-op">[</tt><tt class="py-op">:</tt><tt class="py-op">-</tt><tt class="py-number">1</tt><tt class="py-op">]</tt> </tt>
<a name="L221"></a><tt class="py-lineno">221</tt>  <tt class="py-line">                    <tt class="py-keyword">if</tt> <tt class="py-name">ipv6_prefix</tt><tt class="py-op">[</tt><tt class="py-op">:</tt><tt class="py-op">-</tt><tt class="py-number">1</tt><tt class="py-op">]</tt> <tt class="py-op">!=</tt> <tt class="py-op">[</tt><tt class="py-string">'0'</tt><tt class="py-op">,</tt> <tt class="py-string">'0'</tt><tt class="py-op">,</tt> <tt class="py-string">'0'</tt><tt class="py-op">,</tt> <tt class="py-string">'0'</tt><tt class="py-op">,</tt> <tt class="py-string">'0'</tt><tt class="py-op">]</tt><tt class="py-op">:</tt> </tt>
<a name="L222"></a><tt class="py-lineno">222</tt>  <tt class="py-line">                        <tt class="py-keyword">raise</tt> <tt class="py-name">invalid_addr</tt> </tt>
<a name="L223"></a><tt class="py-lineno">223</tt>  <tt class="py-line"> </tt>
<a name="L224"></a><tt class="py-lineno">224</tt>  <tt class="py-line">                    <tt class="py-keyword">if</tt> <tt class="py-name">ipv6_prefix</tt><tt class="py-op">[</tt><tt class="py-op">-</tt><tt class="py-number">1</tt><tt class="py-op">]</tt><tt class="py-op">.</tt><tt class="py-name">lower</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> <tt class="py-keyword">not</tt> <tt class="py-keyword">in</tt> <tt class="py-op">(</tt><tt class="py-string">'0'</tt><tt class="py-op">,</tt> <tt class="py-string">'ffff'</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L225"></a><tt class="py-lineno">225</tt>  <tt class="py-line">                        <tt class="py-keyword">raise</tt> <tt class="py-name">invalid_addr</tt> </tt>
<a name="L226"></a><tt class="py-lineno">226</tt>  <tt class="py-line"> </tt>
<a name="L227"></a><tt class="py-lineno">227</tt>  <tt class="py-line">                    <tt class="py-comment">#   IPv6 verbose IPv4 compatibility mode.</tt> </tt>
<a name="L228"></a><tt class="py-lineno">228</tt>  <tt class="py-line"><tt class="py-comment"></tt>                    <tt class="py-keyword">if</tt> <tt class="py-name">len</tt><tt class="py-op">(</tt><tt class="py-name">tokens</tt><tt class="py-op">)</tt> <tt class="py-op">!=</tt> <tt class="py-number">7</tt><tt class="py-op">:</tt> </tt>
<a name="L229"></a><tt class="py-lineno">229</tt>  <tt class="py-line">                        <tt class="py-keyword">raise</tt> <tt class="py-name">invalid_addr</tt> </tt>
<a name="L230"></a><tt class="py-lineno">230</tt>  <tt class="py-line"> </tt>
<a name="L231"></a><tt class="py-lineno">231</tt>  <tt class="py-line">                    <tt class="py-name">ipv4_str</tt> <tt class="py-op">=</tt> <tt id="link-12" class="py-name"><a title="netaddr.fallback.inet_aton" class="py-name" href="#" onclick="return doclink('link-12', 'inet_aton', 'link-9');">inet_aton</a></tt><tt class="py-op">(</tt><tt class="py-name">tokens</tt><tt class="py-op">.</tt><tt class="py-name">pop</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L232"></a><tt class="py-lineno">232</tt>  <tt class="py-line">                    <tt class="py-name">tokens</tt><tt class="py-op">.</tt><tt class="py-name">append</tt><tt class="py-op">(</tt><tt class="py-string">'%x'</tt> <tt class="py-op">%</tt> <tt class="py-name">_unpack</tt><tt class="py-op">(</tt><tt class="py-string">'&gt;H'</tt><tt class="py-op">,</tt> <tt class="py-name">ipv4_str</tt><tt class="py-op">[</tt><tt class="py-number">0</tt><tt class="py-op">:</tt><tt class="py-number">2</tt><tt class="py-op">]</tt><tt class="py-op">)</tt><tt class="py-op">[</tt><tt class="py-number">0</tt><tt class="py-op">]</tt><tt class="py-op">)</tt> </tt>
<a name="L233"></a><tt class="py-lineno">233</tt>  <tt class="py-line">                    <tt class="py-name">tokens</tt><tt class="py-op">.</tt><tt class="py-name">append</tt><tt class="py-op">(</tt><tt class="py-string">'%x'</tt> <tt class="py-op">%</tt> <tt class="py-name">_unpack</tt><tt class="py-op">(</tt><tt class="py-string">'&gt;H'</tt><tt class="py-op">,</tt> <tt class="py-name">ipv4_str</tt><tt class="py-op">[</tt><tt class="py-number">2</tt><tt class="py-op">:</tt><tt class="py-number">4</tt><tt class="py-op">]</tt><tt class="py-op">)</tt><tt class="py-op">[</tt><tt class="py-number">0</tt><tt class="py-op">]</tt><tt class="py-op">)</tt> </tt>
<a name="L234"></a><tt class="py-lineno">234</tt>  <tt class="py-line"> </tt>
<a name="L235"></a><tt class="py-lineno">235</tt>  <tt class="py-line">                    <tt class="py-name">values</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-name">_pack</tt><tt class="py-op">(</tt><tt class="py-string">'&gt;H'</tt><tt class="py-op">,</tt> <tt class="py-name">int</tt><tt class="py-op">(</tt><tt class="py-name">i</tt><tt class="py-op">,</tt> <tt class="py-number">16</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> <tt class="py-keyword">for</tt> <tt class="py-name">i</tt> <tt class="py-keyword">in</tt> <tt class="py-name">tokens</tt><tt class="py-op">]</tt> </tt>
<a name="L236"></a><tt class="py-lineno">236</tt>  <tt class="py-line">                <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L237"></a><tt class="py-lineno">237</tt>  <tt class="py-line">                    <tt class="py-comment">#   IPv6 verbose mode.</tt> </tt>
<a name="L238"></a><tt class="py-lineno">238</tt>  <tt class="py-line"><tt class="py-comment"></tt>                    <tt class="py-keyword">if</tt> <tt class="py-name">len</tt><tt class="py-op">(</tt><tt class="py-name">tokens</tt><tt class="py-op">)</tt> <tt class="py-op">!=</tt> <tt class="py-number">8</tt><tt class="py-op">:</tt> </tt>
<a name="L239"></a><tt class="py-lineno">239</tt>  <tt class="py-line">                        <tt class="py-keyword">raise</tt> <tt class="py-name">invalid_addr</tt> </tt>
<a name="L240"></a><tt class="py-lineno">240</tt>  <tt class="py-line">                <tt class="py-keyword">try</tt><tt class="py-op">:</tt> </tt>
<a name="L241"></a><tt class="py-lineno">241</tt>  <tt class="py-line">                    <tt class="py-name">tokens</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-name">int</tt><tt class="py-op">(</tt><tt class="py-name">token</tt><tt class="py-op">,</tt> <tt class="py-number">16</tt><tt class="py-op">)</tt> <tt class="py-keyword">for</tt> <tt class="py-name">token</tt> <tt class="py-keyword">in</tt> <tt class="py-name">tokens</tt><tt class="py-op">]</tt> </tt>
<a name="L242"></a><tt class="py-lineno">242</tt>  <tt class="py-line">                    <tt class="py-keyword">for</tt> <tt class="py-name">token</tt> <tt class="py-keyword">in</tt> <tt class="py-name">tokens</tt><tt class="py-op">:</tt> </tt>
<a name="L243"></a><tt class="py-lineno">243</tt>  <tt class="py-line">                        <tt class="py-keyword">if</tt> <tt class="py-keyword">not</tt> <tt class="py-number">0</tt> <tt class="py-op">&lt;=</tt> <tt class="py-name">token</tt> <tt class="py-op">&lt;=</tt> <tt class="py-number">0xffff</tt><tt class="py-op">:</tt> </tt>
<a name="L244"></a><tt class="py-lineno">244</tt>  <tt class="py-line">                            <tt class="py-keyword">raise</tt> <tt class="py-name">invalid_addr</tt> </tt>
<a name="L245"></a><tt class="py-lineno">245</tt>  <tt class="py-line"> </tt>
<a name="L246"></a><tt class="py-lineno">246</tt>  <tt class="py-line">                <tt class="py-keyword">except</tt> <tt class="py-name">ValueError</tt><tt class="py-op">:</tt> </tt>
<a name="L247"></a><tt class="py-lineno">247</tt>  <tt class="py-line">                    <tt class="py-keyword">raise</tt> <tt class="py-name">invalid_addr</tt> </tt>
<a name="L248"></a><tt class="py-lineno">248</tt>  <tt class="py-line"> </tt>
<a name="L249"></a><tt class="py-lineno">249</tt>  <tt class="py-line">                <tt class="py-name">values</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-name">_pack</tt><tt class="py-op">(</tt><tt class="py-string">'&gt;H'</tt><tt class="py-op">,</tt> <tt class="py-name">i</tt><tt class="py-op">)</tt> <tt class="py-keyword">for</tt> <tt class="py-name">i</tt> <tt class="py-keyword">in</tt> <tt class="py-name">tokens</tt><tt class="py-op">]</tt> </tt>
<a name="L250"></a><tt class="py-lineno">250</tt>  <tt class="py-line">            <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L251"></a><tt class="py-lineno">251</tt>  <tt class="py-line">                <tt class="py-keyword">raise</tt> <tt class="py-name">invalid_addr</tt> </tt>
<a name="L252"></a><tt class="py-lineno">252</tt>  <tt class="py-line"> </tt>
<a name="L253"></a><tt class="py-lineno">253</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-string">''</tt><tt class="py-op">.</tt><tt class="py-name">join</tt><tt class="py-op">(</tt><tt class="py-name">values</tt><tt class="py-op">)</tt> </tt>
<a name="L254"></a><tt class="py-lineno">254</tt>  <tt class="py-line">    <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L255"></a><tt class="py-lineno">255</tt>  <tt class="py-line">        <tt class="py-keyword">raise</tt> <tt class="py-name">ValueError</tt><tt class="py-op">(</tt><tt class="py-string">'Unknown address family %d'</tt> <tt class="py-op">%</tt> <tt class="py-name">af</tt><tt class="py-op">)</tt> </tt>
</div><a name="L256"></a><tt class="py-lineno">256</tt>  <tt class="py-line"> </tt><script type="text/javascript">
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